Beggars Banquet & Brian

Just a general follow-up question. What, if any, harmonica parts do you think Brian is responsible for on the lp? Many over at Gerry's message board think he plays on "Dear Doctor" and "Prodigal Son" but not "Parachute Woman." Your thoughts? BTW, the Rolling Stone magazine on Brian's death in '69 has photos of him doing harmonica overdubs. Thanks for your insights. And kudos for this excellent web-site.